Lamp



Feb. 7, 1928. 1 1,658,549

BLACKMORE LAMP Filed May 2. 1923 2 Sheetg-Sheet'l avwmtoz Patented Feb.7, 1928.

UNITED STATES PATENT OFFICE.

LLOYD BLAOKMORE, OF HIGHLAND PARK, MICHIGAN, ASSIGNOR TO GENERAL MOTORSCORPORATION, OF DETROIT, MICHIGAN, A CORPORATION OF DELAWARE.

LAMP.

Application filed m 2, 1923. Serial so. 636,228,

preferably of metal such as duralumin, tov

- permit the supporting of an electric bulb or light substantially atits axis. The reflector may form the body of the lamp or. may beremovably mounted in the open end of an enclosing shell, and in thepreferred form of the invention-the reflector is doubled back on itselfto form anencircling frame or bezel for the glass front. In oneillustrative embodiment of the invention this doubled back portion formsa cylindrical flange which engages an annular ridge on the shell to givethe lamp a finished appearance.

The reflector is removably secured in the shell by a member which mayalso, if desired, be used to secure the usual glass or lens in the openend of the reflector. In one arrangement selected for illustration thismember is in the form of a spring ring having ofl'set portions whichproject through alined openings in the reflector and the shell and whichmay be seated in a roove formed in the reflector, projecting su cientlytherefrom to hold the glass in place against an annular shoulder formedin the reflector;

Another feature of the invention relates to an arrangement forsupporting the socket for the electric connections on the reflector,

or for'passing the connecting wires through the lamp support to a socketcarried by the support. Other features and objects of the invention,including a new connection for the tie rod and various other novelcombinations of parts and desirable particular constructions, will beapparent from the fol lowing description of the illustrative embodimentsshown in the accompanying drawings, in which:

' Figure 1 is a view of a headlight in front elevation, with partsbroken away and shown in vertical section on the line 1-1 of Figure-2;

Figure 2 1s a section substantially on the line 2-2 of Figure 1 showingthe manner of securing the reflector in the-open end of its shell;

reflector 118. Thereflector 118 Figure 3 is a front elevation of amodified form;

Figure 4 is a vertical section on 4-4 of Figure 3;

Figure 5 is a front elevation, partly brpiken away, of adiflerently-modifled form; an

FigureG is a View, partly in side elevation and partly'in verticalsection, of the modification shown in Figure 5.

In the first'illustrative embodiment of the invention the parts areenclosed in a shell 10, which has a centrally arranged socket 12 topermit connection to an electric circuit. The socket 12 is connected toan inner socket 14; which carries the bulb o'r light 16, the socket 14being arranged in an opening the line substantially at the anis of areflector 18 of duralumin or other metal which is drawn on itself at 20to form a substantially cylindrical flange which engages an annularridge 22 0n the shell 10 to provide a finished pleasing appearance onthe exterior of the lamp. The usual glass or lens 24L- may be seatedagainst a gasket or rubber washer 26 engaglng a shoulder formed in thereflector 18, and it is held in place by a spring wire 28 which isseated in a groove formed in the reflector, but which projects from thegroove sufficiently to hold the glass in place. The reflector'and shellare provided with alined openings 30 through which project offsetportions 32 of the spring wire 28, thus locking the reflector and shellefl'ectively together by means of the member which holds the glass orlens 24.

The modification shown in Figures 3 and 4,1 diifers from that of Figures1 and 2,in that the casing 110 does not carry the socket 112 for theelectrical connections, the socket being mounted at the bottom of theflange 120 of reflector 118, and being connected to the bulb 116 insocket 114 by wires 117. The glass 124 is provided with a gasket orwasher 126, which may be of rubber, and which is U-shaped in crosssection to embrace the edge of the glass, and is held in place by aspring wire 128 which may have oflsetportions 132 snapping into holes inthe is shown as being secured to casing 1 10'by rivets 134.

'One manner of supporting the lamp is be bolted or riveted to thefender, and an arm 152 bolted or otherwise secured to a tie rod 154,shown as a tubular member, which is similarly connected to the bracket146 of tor 218 may be riveted or otherwise secured to casing2i0. Glass224, with its gasket 226 of U-shaped cross-section, is held in place byspring wire 228.

217 pass through a hole in the rear of rod 236, and through stem 238,which is hollow, to socket 212, which is secured to or integral with nut240. Nut 240 cooperates with convex washer 242 and concave washer 244,the

latter being shown as adjustably threaded onstem 238, to clamp the lampon bracket 246, with or without look washer 248. Bracket 246 hasan arm250 to be secured to the fender. "The rod 236 is extended to form aportion 252 projecting through a hole in flange 220, and which 1sconnected by a tie rod 254, shown as a tubular member, to the oppositelamp.

While illustrative embodiments of my invention have been described indetail, it is not my intention to limit its scope to those embodimentsorotherwise than by the terms of the appended claims- It is to be notedouter ed that, while not in all of its aspectsnecessarily. limitedthereto, the invent-ion is es cially useful in lamps which are-.provi edwith reflectors of duralumin or an equivalent material which. does nottarnish and which can readily be worked into the required form and'whichprovides a surface of pleasing appearance on the parts whichextendbeyond the glass or lens 24 and which aretherefore exposed.

I claim:

1; A lamp comprising, in combination, an outer shell, areflector in theshell having a backwardly bent portion fitting over the edge of theshell, and a locking ring within the reflector having ofl'set portionsprojecting through alined openings in the reflector and the shell to;fastenthem together.

2. A lamp comprising, in combination, an

outer shell, a reflector in theshell, a glass in the reflector, and alocking ring having oifset portions projecting through alined openingsin the reflector and the shell to lock the Eefiector in the shell andthe glass in the reector.

1 3. A lamp comprising, in combination, an

outer shell, a combination door and reflec 0 tor mounted in the open endof the shell, :1 In this. modlficatlon the'connectmg WIIGS.

glass mounted in the openendof the reflector, and common means forsecuring the gllalsls in thg reflector and the reflector in the s e 4.The combination of a lamp casing having a forwardly projecting portiondefining an open end, a reflector fitt ng in the open end of said casinghaving a turned-back forming a channel in whichthe forward y projectingportion of said casing is received, means engaging the inner wall ofsaid channel and the orwardly proectmgportion of said casing forsecuring the reflector m the casing, and a transpar ent medium for theopen end of, the said reflector held means. In testlmonywhe'reof I afiixmy signature.

LLOYD BLAoKnonn.

in position by said last-named

